diff --git a/composer.json b/composer.json
index 647fbe1..87e7591 100644
--- a/composer.json
+++ b/composer.json
@@ -34,9 +34,9 @@
     }
   },
   "require-dev": {
-    "friendsofphp/php-cs-fixer": "^3.54",
-    "phpstan/phpstan": "^1.10",
-    "rector/rector": "^1.0",
+    "friendsofphp/php-cs-fixer": "^3.57",
+    "phpstan/phpstan": "^1.11",
+    "rector/rector": "^1.1",
     "phpunit/phpunit": "^10.5",
     "phpstan/phpstan-phpunit": "^1.3",
     "phpstan/extension-installer": "^1.3",
diff --git a/src/Helpers/Parser.php b/src/Helpers/Parser.php
index 23f7bc6..6061f06 100644
--- a/src/Helpers/Parser.php
+++ b/src/Helpers/Parser.php
@@ -32,7 +32,7 @@ public static function findClassName(?string $fileContent): ?string
             if ($tokens[$i][0] === T_CLASS) {
                 for ($j = $i + 1;$j < $counter;$j++) {
                     if ($tokens[$j] === '{') {
-                        $class = $tokens[$i + 2][1];
+                        $class = $tokens[$i + 2][1] ?? null;
                     }
                 }
             }